GRABO quality engineering

GRABO’s trademark technology strives to make heavy lifting easier. GRABO’s state-of-the-art tools make lifting easy. We know this is a positive change, no matter where our customers are in the world.

GRABO tools are innovative and carefully developed and tested. We know what builders and installers are looking for in state-of-the-art technology. Making larger workplaces more comfortable and flexible is our constant goal.

We are proud to host research and development engineers worldwide. From Shenzhen to San Francisco, Israel and Hong Kong, we are very spread out. Our research and development experts live and fuel new tool innovations. We never stop looking for ways to make everyday processes a little easier!

Here are some of the innovations we’re known for:

We work with state-of-the-art technology. Our tools use sea level compaction and fabrication hardware. We also use electronic upgrades commonly found in drone manufacturing.
Our vacuum lifting technique is fully patented. We develop unique tools to effortlessly lift heavy material.
Our long arm extensions make lifting ergonomic.
We also develop intelligent tools. Our products come with digital sensors to advise on lifting capacity.
You can also manage multiple GRABOs remotely with remote plugins.
We also support high flow vacuum pumping – excellent support for dry materials and porous plates.
You can even control GRABO tech very quickly via the app and Bluetooth!
We never stop innovating. Our products are constantly evolving and working at the highest possible level. Quality end-user experiences are naturally what we strive for in everything we do.

Vacuuming porous materials.

Porous surfaces are among the most difficult to lift and move. This is because this type of surface or panel contains small holes or gaps that allow air to move. For example, you can expect a porous surface to be made of wood, concrete, or even ceramic. The fact is that many suction and lifting tools cannot hold or handle a porous surface because they cannot complete the vacuum.

A regular vacuum works well on clean, flat surfaces, but rarely deals with porosity. Even if the spaces are microscopic, maintaining the gaskets is difficult. Although you can hold the suction cup for a few seconds or more, it will not stick.

Vacuum fluctuations are difficult to manage with normal suction. This is why GRABO is leading the vacuum lifter technology industry.

We develop tools that benefit from patented air balancing. The important thing is that the GRABO tool draws more air through the engine than it can get through the porous surfaces. This requires a lot of calculations because it is more than a simple ratio or balance! But at a basic level, it’s pumping out more air than your porous surface is losing.

We design our suction cup tools based on Murray’s Law methods. Essentially, this means that we consider mass variation, force transfer, and molecular diffusion. The equations are often quite complex – but GRABO’s engineers are highly adept at this level of analytics.

Engineers design tools based on your air transfer rate and the surface in question. By multiplying the flow rate by the surface area, we can find out how powerful our pumps need to be.

We have designed and developed our tools to work with the most awkward and complex surfaces. If you are interested in more information, check out our table below!

The amount of current required from GRABO to maintain a strong vacuum seal on a porous surface is generally described by the generalised Murray’s Law formula:

where X is the ratio of mass variation during mass transfer in the main pore, the exponent α depends on the type of transfer. For laminar flow, α = 3; for turbulent flow α = 7/3; for molecule or ion diffusion α = 2; etc

The flow rate is multiplied by the area under the seal at a given pressure difference, resulting in the flow rate and power of the GRABO internal electric pump.

But as interesting as the engineering is, GRABO users don’t have to worry about the science. All you need to know is that GRABO is designed to work well with the most common porous materials in the industry.

For maximum lift capabilities, see the “Lift in Different Conditions” table at the bottom of this page.